Following modules are included:

• 2x Standard VCO A-110
• 2x ADSR A-140
• 2 x LFO A-145
• 1x Ring Modulator A-114
• 1 x Audio Divider A-115
• 1 x VC Waveform Processor A-116
• 1 x Noise/Random A-118
• 1 x VCF1 A-120 (24dB low pass 1)
• 1 x A-106-6 XP Filter
• 1 x linear VCA A-130
• 1 x logarithmic VCA A-131
• 1 x linear Mixer A-138a
• 1 x logarithmic Mixer A-138b
• 1 x Dual S/H A-148
• 1 x Dual VC Switch A-150
• 1 x Trigger Divider A-160
• 1 x Trigger Sequencer A-161
• 1 x Dual Trigger Delay A-162
• 1 x Dual Slew Limiter A-170
• 1 x Multiple I A-180

The modules of Basic System 1 are assembled in a 6U frame with built in power supply and bus boards.